// method

req= 
IncomingMessage
{
  _readableState:
   ReadableState {
     objectMode: false,
     highWaterMark: 16384,
     buffer: BufferList { head: null, tail: null, length: 0 },
     length: 0,
     pipes: null,
     pipesCount: 0,
     flowing: null,
     ended: true,
     endEmitted: false,
     reading: false,
     sync: true,
     needReadable: false,
     emittedReadable: true,
     readableListening: false,
     resumeScheduled: false,
     paused: true,
     emitClose: true,
     destroyed: false,
     defaultEncoding: 'utf8',
     awaitDrain: 0,
     readingMore: true,
     decoder: null,
     encoding: null },
  readable: true,
  _events:
   [Object: null prototype] { end: [Function: resetHeadersTimeoutOnReqEnd] },
  _eventsCount: 1,
  _maxListeners: undefined,
  socket:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        reading: true,
        onread: [Function: onStreamRead],
        onconnection: null,
        _consumed: true,
        [Symbol(owner)]: [Circular] },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: BufferList { head: null, tail: null, length: 0 },
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        paused: false,
        emitClose: false,
        destroyed: false,
        defaultEncoding: 'utf8',
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     _events:
      [Object: null prototype] {
        end: [Array],
        drain: [Array],
        timeout: [Function: socketOnTimeout],
        data: [Function: bound socketOnData],
        error: [Array],
        close: [Array],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 8,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        finalCalled: false,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        destroyed: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function: bound onwrite],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        emitClose: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     _server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     timeout: 120000,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: bound onParserExecute],
        _headers: [],
        _url: '',
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        _consumed: true,
        onIncoming: [Function: bound parserOnIncoming],
        parsingHeadersStart: 0,
        [Symbol(isReused)]: false },
     on: [Function: socketOnWrap],
     _paused: false,
     _peername: { address: '127.0.0.1', family: 'IPv4', port: 56604 },
     _httpMessage:
      ServerResponse {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _onPendingData: [Function: bound updateOutgoingData],
        _sent100: false,
        _expect_continue: false,
        req: [Circular],
        locals: [Object: null prototype] {},
        flush: [Function: flush],
        write: [Function: write],
        end: [Function: end],
        on: [Function: on],
        writeHead: [Function: writeHead],
        _startAt: undefined,
        _startTime: undefined,
        __onFinished: [Function],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     [Symbol(asyncId)]: 46,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]:
      Timeout {
        _called: false,
        _idleTimeout: 120000,
        _idlePrev: [Timeout],
        _idleNext: [TimersList],
        _idleStart: 12578,
        _onTimeout: [Function: bound ],
        _timerArgs: undefined,
        _repeat: null,
        _destroyed: false,
        [Symbol(unrefed)]: true,
        [Symbol(asyncId)]: 47,
        [Symbol(triggerId)]: 46 },
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0 },
  connection:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        reading: true,
        onread: [Function: onStreamRead],
        onconnection: null,
        _consumed: true,
        [Symbol(owner)]: [Circular] },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: BufferList { head: null, tail: null, length: 0 },
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        paused: false,
        emitClose: false,
        destroyed: false,
        defaultEncoding: 'utf8',
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     _events:
      [Object: null prototype] {
        end: [Array],
        drain: [Array],
        timeout: [Function: socketOnTimeout],
        data: [Function: bound socketOnData],
        error: [Array],
        close: [Array],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 8,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        finalCalled: false,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        destroyed: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function: bound onwrite],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        emitClose: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     _server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     timeout: 120000,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: bound onParserExecute],
        _headers: [],
        _url: '',
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        _consumed: true,
        onIncoming: [Function: bound parserOnIncoming],
        parsingHeadersStart: 0,
        [Symbol(isReused)]: false },
     on: [Function: socketOnWrap],
     _paused: false,
     _peername: { address: '127.0.0.1', family: 'IPv4', port: 56604 },
     _httpMessage:
      ServerResponse {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _onPendingData: [Function: bound updateOutgoingData],
        _sent100: false,
        _expect_continue: false,
        req: [Circular],
        locals: [Object: null prototype] {},
        flush: [Function: flush],
        write: [Function: write],
        end: [Function: end],
        on: [Function: on],
        writeHead: [Function: writeHead],
        _startAt: undefined,
        _startTime: undefined,
        __onFinished: [Function],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     [Symbol(asyncId)]: 46,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]:
      Timeout {
        _called: false,
        _idleTimeout: 120000,
        _idlePrev: [Timeout],
        _idleNext: [TimersList],
        _idleStart: 12578,
        _onTimeout: [Function: bound ],
        _timerArgs: undefined,
        _repeat: null,
        _destroyed: false,
        [Symbol(unrefed)]: true,
        [Symbol(asyncId)]: 47,
        [Symbol(triggerId)]: 46 },
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0 },
  httpVersionMajor: 1,
  httpVersionMinor: 1,
  httpVersion: '1.1',
  complete: true,
  headers:
   { host: 'localhost:3001',
     connection: 'keep-alive',
     'upgrade-insecure-requests': '1',
     'user-agent':
      'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36',
     accept:
      'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
     'sec-fetch-site': 'none',
     'sec-fetch-mode': 'navigate',
     'sec-fetch-user': '?1',
     'sec-fetch-dest': 'document',
     'accept-encoding': 'gzip, deflate, br',
     'accept-language': 'zh-CN,zh;q=0.9',
     'if-none-match': 'W/"3f-/9UszEr12pq2IMUFyP1hVNY0qbU"' },
  rawHeaders:
   [ 'Host',
     'localhost:3001',
     'Connection',
     'keep-alive',
     'Upgrade-Insecure-Requests',
     '1',
     'User-Agent',
     'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36',
     'Accept',
     'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
     'Sec-Fetch-Site',
     'none',
     'Sec-Fetch-Mode',
     'navigate',
     'Sec-Fetch-User',
     '?1',
     'Sec-Fetch-Dest',
     'document',
     'Accept-Encoding',
     'gzip, deflate, br',
     'Accept-Language',
     'zh-CN,zh;q=0.9',
     'If-None-Match',
     'W/"3f-/9UszEr12pq2IMUFyP1hVNY0qbU"' ],
  trailers: {},
  rawTrailers: [],
  aborted: false,
  upgrade: false,
  url: '/posts/2',
  method: 'GET',
  statusCode: null,
  statusMessage: null,
  client:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        reading: true,
        onread: [Function: onStreamRead],
        onconnection: null,
        _consumed: true,
        [Symbol(owner)]: [Circular] },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: BufferList { head: null, tail: null, length: 0 },
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        paused: false,
        emitClose: false,
        destroyed: false,
        defaultEncoding: 'utf8',
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     _events:
      [Object: null prototype] {
        end: [Array],
        drain: [Array],
        timeout: [Function: socketOnTimeout],
        data: [Function: bound socketOnData],
        error: [Array],
        close: [Array],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 8,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        finalCalled: false,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        destroyed: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function: bound onwrite],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        emitClose: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     _server:
      Server {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 2,
        _handle: [TCP],
        _usingWorkers: false,
        _workers: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        keepAliveTimeout: 5000,
        _pendingResponseData: 0,
        maxHeadersCount: null,
        headersTimeout: 40000,
        destroy: [Function],
        _connectionKey: '4:127.0.0.1:3001',
        [Symbol(IncomingMessage)]: [Function],
        [Symbol(ServerResponse)]: [Function],
        [Symbol(asyncId)]: 44 },
     timeout: 120000,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: bound onParserExecute],
        _headers: [],
        _url: '',
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        _consumed: true,
        onIncoming: [Function: bound parserOnIncoming],
        parsingHeadersStart: 0,
        [Symbol(isReused)]: false },
     on: [Function: socketOnWrap],
     _paused: false,
     _peername: { address: '127.0.0.1', family: 'IPv4', port: 56604 },
     _httpMessage:
      ServerResponse {
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _onPendingData: [Function: bound updateOutgoingData],
        _sent100: false,
        _expect_continue: false,
        req: [Circular],
        locals: [Object: null prototype] {},
        flush: [Function: flush],
        write: [Function: write],
        end: [Function: end],
        on: [Function: on],
        writeHead: [Function: writeHead],
        _startAt: undefined,
        _startTime: undefined,
        __onFinished: [Function],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     [Symbol(asyncId)]: 46,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]:
      Timeout {
        _called: false,
        _idleTimeout: 120000,
        _idlePrev: [Timeout],
        _idleNext: [TimersList],
        _idleStart: 12578,
        _onTimeout: [Function: bound ],
        _timerArgs: undefined,
        _repeat: null,
        _destroyed: false,
        [Symbol(unrefed)]: true,
        [Symbol(asyncId)]: 47,
        [Symbol(triggerId)]: 46 },
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0 },
  _consuming: false,
  _dumped: false,
  next: [Function: next],
  baseUrl: '',
  originalUrl: '/posts/2',
  _parsedUrl:
   Url {
     protocol: null,
     slashes: null,
     auth: null,
     host: null,
     port: null,
     hostname: null,
     hash: null,
     search: null,
     query: null,
     pathname: '/posts/2',
     path: '/posts/2',
     href: '/posts/2',
     _raw: '/posts/2' },
  params: {},
  query: {},
  res:
   ServerResponse {
     _events:
      [Object: null prototype] { finish: [Array], end: [Function: onevent] },
     _eventsCount: 2,
     _maxListeners: undefined,
     output: [],
     outputEncodings: [],
     outputCallbacks: [],
     outputSize: 0,
     writable: true,
     _last: false,
     chunkedEncoding: false,
     shouldKeepAlive: true,
     useChunkedEncodingByDefault: true,
     sendDate: true,
     _removedConnection: false,
     _removedContLen: false,
     _removedTE: false,
     _contentLength: null,
     _hasBody: true,
     _trailer: '',
     finished: false,
     _headerSent: false,
     socket:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [TCP],
        _parent: null,
        _host: null,
        _readableState: [ReadableState],
        readable: true,
        _events: [Object],
        _eventsCount: 8,
        _maxListeners: undefined,
        _writableState: [WritableState],
        writable: true,
        allowHalfOpen: true,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Server],
        _server: [Server],
        timeout: 120000,
        parser: [HTTPParser],
        on: [Function: socketOnWrap],
        _paused: false,
        _peername: [Object],
        _httpMessage: [Circular],
        [Symbol(asyncId)]: 46,
        [Symbol(lastWriteQueueSize)]: 0,
        [Symbol(timeout)]:
         Timeout {
           _called: false,
           _idleTimeout: 120000,
           _idlePrev: [Timeout],
           _idleNext: [TimersList],
           _idleStart: 12578,
           _onTimeout: [Function: bound ],
           _timerArgs: undefined,
           _repeat: null,
           _destroyed: false,
           [Symbol(unrefed)]: true,
           [Symbol(asyncId)]: 47,
           [Symbol(triggerId)]: 46 },
        [Symbol(kBytesRead)]: 0,
        [Symbol(kBytesWritten)]: 0 },
     connection:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [TCP],
        _parent: null,
        _host: null,
        _readableState: [ReadableState],
        readable: true,
        _events: [Object],
        _eventsCount: 8,
        _maxListeners: undefined,
        _writableState: [WritableState],
        writable: true,
        allowHalfOpen: true,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Server],
        _server: [Server],
        timeout: 120000,
        parser: [HTTPParser],
        on: [Function: socketOnWrap],
        _paused: false,
        _peername: [Object],
        _httpMessage: [Circular],
        [Symbol(asyncId)]: 46,
        [Symbol(lastWriteQueueSize)]: 0,
        [Symbol(timeout)]:
         Timeout {
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           _idleTimeout: 120000,
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